... double DSP controller disposing, module independent control, and ‘0’ single point failure risk♦ Rectification, inverter, charge, ... dust-proof craft.System Options♦ SNMP network card♦ Lightning-protection module♦ Battery temperature compensator♦ SMS alarm apparatus♦ ... I) Main inputInput voltage380V/400V/415VInput frequency50/60HzPower factor> 0.99Current distortion factorTHD < 3%Voltage range-40% ~ ...